Carbon-remover.



RTE @TA% PATENT @lBEllfiE.

FRED R. REED, OF HIGHLAND PARK, MICHIGAN.

No Drawing.

To all whom it may concern:

Be itknown that I, FRED R. REED, a citizen of the United States of America, residing at Highland Park, in thecounty of Wayne and State of Michigan, have invented certain new and useful Improvements in Carbon-Removers, of which the following is a specification. I This invention relates to compounds for removing carbon and more particularly to a compound adapted for removing the carbon from the cylinders of internal combustion engines.

Among the objects of the invention are to provide a carbon remover which when inserted in the cylinders and heated up will commence to immediately disintegrate the carbon deposits, and will continue to act thereon for a considerable period of time, thus causing the carbon deposits to be removed in finely divided particles; to provide a carbon remover which can be economically manufactured and put up in convenient form to be sold to the trade; to provide a carbon remover which automobile users can, without special skill or training, safely and effectively employ for removing the carbon from: their engines; and in general to provide a new and improved com pound of the character above referred to.

In the ordinary use of internal combustion engines there is a coating or crust of carbon deposit formed on the interior sur- .face of the cylinder and on the piston,'valves tially the following proportions is Well and other interior partsv of the engine. Owing to the inaccessibility of these parts 'it is dificult to mechanically remove the carbon without completely dismantling the engine. The present invention contemplates an improved compound, which can be easily inserted in the cylinders and by which this carbon deposit can be disintegrated into a finely divided or powdered form, the operation of removing the carbon being accomplished without any injurious efiect to the working parts of the engine.

I have found that a compound containing the following ingredients in substan- Speeification of Letters Patent.

CARBON-REMOVER.

Patented Mayan), iaiv.

Application filed March 18, 1916. Serial No. 85,049.

adapted for this purpose. This compound includes:

Powdered zinc 60% Paraffin wax 25% Stearin 10% Naphthalene (with coloring matter) 5% ferred form bothstearin and naphthalene are employed, the invention in certain of its aspects is not limited to the use of either or both of these substances. Also the proportions of zinc could be varied from a maximum of about 70% down to a minimum of about 30%. However I preferably employ the zinc in substantially as large a per centage as the base will carry. In the above compound the zinc and naphthalene are the active agents while the wax forms the body or base for carrying the active agents and the stearin serves to further hold the zinc in suspension. In commercial use the compound is preferably made up into tablets of suitable size, such as a tablet five-eighths of an inch in diameter by three-eighths of an inch in thickness and the manner of using the compound is as follows:

The motor is started and warmed up. It is then stopped and the spark plugs removed and one'or two tablets of the carbon remover inserted into the cylinder. The spark plugs are replaced into position, the motor is started slowly and allowed to run idle for two or three minutes, enough to melt the wax base after which the motor is ready to use. The heat continues to volatilize the tablets slowly and liberates gases therefrom, which gases are carbon solvents to a small degree. The solvent action loosens the carbon deposit in a very finely divided or powdered state and the powdered carbon is discharged through the engine exhaust. While the de-carbonization starts almost immediately it continues to take place slowly for one or two hours after the engine has been started up again and this gradual removal of the carbon avoids any chance of the carbon being broken up into large particles which might lodge on the valve seats and clog the valves. Moreover the compound has the advantage that it can be put up into a handy commercial form, such as in tablets, and its use requires no special training or skill.

What I claim as my invention is 1. A compound for use in removing carbon, comprising powdered zinc and a base therefor formed of wax.

2. A compound for use in removing car- 'bon comprising a paraffin wax body or base and more than 30% of powdered zinc.

3. A compound for use in removing carbon, comprising powdered zinc, paraffin wax and stearin.

4. A compound foruse in removing car-' bon, comprising the following ingredients in substantially the proportions given:

Naphthalene (with coloring matter) 5% In testimony whereof I afix my signature.

FRED R. REED. 

